From 918faf98203e295afd6c2734c61bed8d64c1f24c Mon Sep 17 00:00:00 2001
From: John Robbins <John.Robbins@amd.com>
Date: Tue, 27 May 2025 13:20:09 -0400
Subject: [PATCH 1/3] Add BUILD_CODE_COVERGAGE option

---
 CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8f73ce7..bf85e9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,6 +107,7 @@ option(BUILD_CODE_COVERAGE "Build with code coverage enabled" OFF)
 option(BUILD_ADDRESS_SANITIZER "Build with address sanitizer enabled" OFF)
 option(BUILD_DOCS "Build documentation" OFF)
 option(USE_CUDA "Build hipGRAPH using CUDA backend" OFF)
+option(BUILD_CODE_COVERAGE "Build with code coverage flags (clang only)" OFF)
 # If CUGRAPH_BUILD_DIR is not set, look at CUGRAPH_SOURCE_DIR/cpp/build.
 cmake_dependent_option(CUGRAPH_SOURCE_DIR "Point at a cugraph source directory" "" USE_CUDA "")
 cmake_dependent_option(CUGRAPH_BUILD_DIR "Point at a cugraph build directory (often cpp/build)" "" USE_CUDA "")

From 14eb1e058ecdb8d222405690a81225c7b4bbca98 Mon Sep 17 00:00:00 2001
From: John Robbins <John.Robbins@amd.com>
Date: Tue, 27 May 2025 13:27:11 -0400
Subject: [PATCH 2/3] Instrument the code when BUILD_CODE_COVERAGE option is
 set to ON

---
 library/CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 725f4e2..6587ce7 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -154,6 +154,11 @@ if(NOT BUILD_SHARED_LIBS)
     set_target_properties(hipgraph PROPERTIES PREFIX "lib")
 endif()
 
+if(BUILD_CODE_COVERAGE)
+  target_compile_options( hipgraph PRIVATE -g -O0 -fprofile-instr-generate -fcoverage-mapping )
+  target_link_options( hipgraph PUBLIC -fprofile-instr-generate )
+endif()
+
 # Include sources
 add_subdirectory(src)
 

From edc3901fa30b55df9299e03b61e8d971a93deba1 Mon Sep 17 00:00:00 2001
From: John Robbins <John.Robbins@amd.com>
Date: Tue, 27 May 2025 13:30:12 -0400
Subject: [PATCH 3/3] Add coverage target to generate code coverage report

---
 clients/tests/CMakeLists.txt | 38 ++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/clients/tests/CMakeLists.txt b/clients/tests/CMakeLists.txt
index e3ae5b9..387bef5 100644
--- a/clients/tests/CMakeLists.txt
+++ b/clients/tests/CMakeLists.txt
@@ -57,6 +57,44 @@ if(USE_CUDA)
     target_link_libraries(hipgraph-test PRIVATE ${CUDA_LIBRARIES})
 endif()
 
+if(BUILD_CODE_COVERAGE)
+  add_custom_target(
+    code_cov_tests
+    DEPENDS hipgraph-test
+    COMMAND ${CMAKE_COMMAND} -E rm -rf ./coverage-report
+    COMMAND ${CMAKE_COMMAND} -E make_directory ./coverage-report/profraw
+    COMMAND ${CMAKE_COMMAND} -E env LLVM_PROFILE_FILE="./coverage-report/profraw/hipgraph-coverage_%p.profraw" $<TARGET_FILE:hipgraph-test>
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+  )
+
+  find_program(
+    LLVM_PROFDATA
+    llvm-profdata
+    REQUIRED
+    HINTS ${ROCM_PATH}/llvm/bin
+    PATHS /opt/rocm/llvm/bin
+  )
+
+  find_program(
+    LLVM_COV
+    llvm-cov
+    REQUIRED
+    HINTS ${ROCM_PATH}/llvm/bin
+    PATHS /opt/rocm/llvm/bin
+  )
+
+  add_custom_target(
+    coverage
+    DEPENDS code_cov_tests
+    COMMAND ${LLVM_PROFDATA} merge -sparse ./coverage-report/profraw/hipgraph-coverage_*.profraw -o ./coverage-report/hipgraph.profdata
+    COMMAND ${LLVM_COV} report -object ./library/src/libhipgraph.so -instr-profile=./coverage-report/hipgraph.profdata
+    COMMAND ${LLVM_COV} show -object ./library/src/libhipgraph.so -instr-profile=./coverage-report/hipgraph.profdata -format=html -output-dir=coverage-report
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+  )
+
+endif()
+
+
 set_target_properties(hipgraph-test PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/staging")
 
 rocm_install(TARGETS hipgraph-test COMPONENT tests)